Dumping-car



(Ne Medel.) 2 sheen-sheet 1.

E. E. DWIGHT.

DUMPING GAR. Ne. 434.257. l Peteeted Aug. 12, 1890.

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2 sheets-sheet 2.

(No Model.) Y'

E. E. DWIGHT.

DUMPING GAR. No. 434,257. Patented Aug. 12, 1890.

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EDWARD E. DVIGHT, OF TOLEDO, OHIO.

DUMPlNG-CAR.

SPECIFICATION forming part 0f Letters Patent N0. 434,257, dated August 12, 1890.

Application iiled January 13, 1890. Serial No. 336,730. (No model.)

To all whom it may concer-n:

Be it known that I, EDWARD E. DWIGHT, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain n ew and useful Improvements in Dumping-Cars; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification.

My invention relates to that class of dumping-cars in which a sectional bottom is raised to .an incline to cause the load to descend by gravity after the sides of the car have been opened to permit egress of the load.

III Letters Patent granted to me, dated December 17,1889, and numbered 417,239, there is shown, described, and claimed a iiexible connection with a longitudinal shaft and the hinged sides or doors, whereby the sides or doors are urged open by the pressure of material and closed by winding the iiexible connections upon drums upon the shaft.

My present invention is an improvement upon the said invention, and has for its object to render it possible to control the opening as well as the closing of the sides by positive means, thereby preventingy the mass of material to be unloaded from compacting and preventing the discharge by gravity.

It has been found in practice that the car when loaded and moved a considerable distance has a tendency to compact the material firm that it loses its granular properties, and, as a consequence, if depended upon to exert an outward pressure upon the load of sufficient degree to urge the sides outward to permit the load to discharge, fails by reason of its density and rectangular form, and as a result when the bottom is elevated and the mass is caused to move by gravity it opens the sides or doors of the car so gradually as to clog and compact without fal-ling through the opening.`

The invention consists in certain details of construction and combination of parts, as will be hereinafter described, and pointed out in the claims. f

In the drawings, Figure l is a top plan view of a portion vof a car with the sides and bottom removed to disclose the longitudinal shaft upon which the pinions are secured for operating the rack-bars and rods that control the sides. Fig. 2 is a transverse section of a car, showing the position of the pinion andrack-bars and their connection with the sides. Fig. 3 is a like View showing the sides opened and the bottom raised. Fig. 4 is a detail View of one of the rack-bars and connecting-rod, a portion of the flange being broken away to disclose the rack. Fig. 5 is a like View of the rack-bar and connecting-rod for the opposite side. Fig. G is adetail View of the hanger for the longitudinal shaft, and Fig. 7 is an edge view of the same.

A designates the sills of the car; B, the vertical posts of the framing, and CV the top rails, D being the movable bottom, and E the sides, preferably formed in sections, each section being hinged to the top rail, as at F, thereby allowing the same to swing outwardly to permit the load to discharge.

G designates a preferred form of hanger for sustaining the operative mechanism, each hanger being formed with projections l-I for attachment to the sides of the sills, and with a boxing I to receive a shaft J running longitudinally of the car and having a squared end K, upon which a crank may be placed to turn the shaft, which is held to any desired revoluble adjustment by a pawl-and-ratchet mechanism L.

M designates a series of pinions securedupon shaft J and adapted to engage with oppositely-arranged rack-bars O, arranged to engage one upon the top and one upon the bottom of each pinion M, whereby when the pinion is revolved the rack-bars move in opposite directions, thereby acting upon the section of side E -with which they are connected to open or close the same.

A preferred form of connection between the rackbars and sides is shown in detail in Figs. 4. and 5, and consists of a rod P, formed with an eye P', through which a bar P is passed and secured to the framing of the side, thereby allowing a pivotal movement of the IOO rod upon bar P, the opposite end of the rod being threaded to pass through a perforation formed in a boss O', formed with the outer end of the. rack-bar, there being nuts O run upon the threaded end of the rod upon each side of the boss, whereby to adjust the length of the operative portion of the same to vary the swing of the sides.

To insure a free movement of the rackbars without the possibility of impinging upon the pinion or torsional strain upon the rack-bars, due to an uneven position of the frame-work, the rack-bars are formed with projecting flanges Q, oppositelv arranged relatively to the pinion M, whereby the flange of the rack-bar upon the top of the pinion bears against the outer end and the flange of the lower rack-bar bears against the inner end of thepinion, the rackbar being held in place by means ofv anti-friction rollers R, journaled upon studs R', secured in the hanger, cach roller R having fianges to bear upon each side of the rack-bar, as shown in Fig. 7.

By reason of the arrangement just described the rack-bar may not only be made of less width than the length of the pinion, thereby increasing the wearing-surface of the pinions, but the rack-bars are always kept at directly right angles to the pinion, and as aA consequence W'ork freely.

To render it convenient to insert or remove the shaft J, the upper half of boxing I may be removed, and the springs in the web of the hanger are of sufficient size to allow the pinions to pass therethrough.

In operation, when it is desired to dump the load, shaft. J is revolved, causing the rack- Y bars to move in opposite directions, thereby opening the sides and permitting so much of the load as will to fall by gravity, after which the bottom is raised and the remainder is dumped, when by raising the pawl from engagement with the ratchet upon shaft .I the sides will close by gravity and are locked in position by means of the pawl and ratchet, the pawl being' of the well-known reversible kind, not necessary to more fully illustrate.

It will be seen that the device is easy of manipulation, positive in action, and that by reason of the adj ustability of rods P the sides may be-thrown open to any desired Width.

What I claim is- 1. In a dumping-car having swinging sides, the combination, with pinions journaled upon the car, of rack-bars connected with the sides and engaging with the pinions, as and for the purpose set forth.

2. In a dumping-car provided with swinging sides, a series of pinions journaled upon the car, and raclcbars intermeshing there* with and adj ustably connected with the sides, as and for the purpose set forth.

3. In a dumping-car having swinging sides,4

a hanger secured to the framing thereof, a shaft jonrnaled therein, and pinions secured upon the shaft, in combination with rack-bars inter-meshing with opposite sides of each pinion, the opposite ends of the raclebars being connected with the swinging sides, as and for the purpose set forth.

4. In a dumping-car having swingi ng sides, a shaft journaled longitudinally thereof, and pinions upon the shaft, in combination with lianged rack bars intermeshing with each pinion upon opposite sides, with the Hanges bearin g upon each end of the pinion, substantially as described, and extensions from the rack-bars connected with the swinging sides, as and for the purpose set forth.

In testimony that I claim the foregoing as my own I hereby aiiix my signature in presence of two witnesses.

EDWTARD E. DWIGHT.

Vitnesses:

WILLIAM WEBSTER, CARROLL J. WEBSTER. 

